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Ecology EOC Review Flashcards | StudBud
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Ecology EOC Review
Ecology EOC Review
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Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
10 percent of the ________ available within one trophic level is transferred to the next level.
mass
heat
matter
energy
2
In a food web, each ____________ depends on the trophic level below it for energy.
producer
detritivore
consumer
decomposer
3
Increased food supplies in an ecosystem decrease competition b/c the competing organisms would
have more space in which to live.
store large quantities of food.
have enough food to eat.
reproduce more often.
4
Competition without division of resources may lead to
stabilization.
extinction.
cohabitation.
evolution.
5
Which is an ADVANTAGE of sexual reproduction?
Only one parent is required
It leads to genetically identical offspring.
Two parents are required
It leads to genetically diverse offspring
6
Which effect MOST likely would result from the clearing of these forests?
an improvement in water quality
a decrease in soil erosion
an improvement in air quality
a decrease in biodiversity
7
What is an explanation of why producers are always found at the lowest trophic level?
Producers are found in fewer numbers than consumers
Producers convert light energy into chemical energy
Producers are larger than consumers.
Consumers are eaten by a variety of producers
8
Which abiotic factor would cause autotrophs in an ecosystem to decrease?
decrease in decomposers
decrease in rain
increase in omnivore population
increase in disease-carrying insects
9
Which is a logical predator-prey relationship?
dog-mountain lion
leech-human
rabbit-lettuce
lion-gazelle
10
Which abiotic factor limits the altitude at which plants can grow?
the temperature of the area
the presence of herbivorous animals
the presence of a parasite
the concentration of microbes in the soil
11
In food chains, the flow of energy is ALWAYS _________.
uncontrolled
two-way
reversible
one-way
12
A reduction in which of these would lead to a decrease in all the other populations in the web?
grasshoppers
coyote
grass
snake
13
Which statement BEST describes how the mice population can benefit from the snakes?
snakes provide an energy source for themice.
snakes will consume only the mice that are bestadapted
snakes keep the mice from overpopulating
snakes also consume moles, which allows mice to increase
14
The carrying capacity of any population will stay the same
as long as predators do not increase
unless environmental conditions change.
even though the birth rate exceeds the death rate.
regardless of emigration and immigration.
15
Which of these best describes mutualism?
relationship between 2 species where neitherspecies benefits
relationship between 2 species where onespecies benefits
relationship between 2 species where bothspecies benefit
relationship between 2 species where one species is harmed
16
Which fate of a meal bug would result from the inability of the species to reproduce?
The species would mutate.
The species would increase.
The species would continue to thrive.
The species would become extinct.
17
The presence of predators lessens the effects of _________________ among the prey.
paraitism
competition
symbiosis
infestation
18
Because no organism lives forever, __________ is necessary in order to prevent extinction.
development
reproduction
homeostasis
growth
19
How do you think this food web would be affected if the plants were eliminated?
The food web would produce more bacteria to compensate
Birds and nematodes would thrive
Only the fungi would survive
The food web would completely collapse
20
If a population grows larger than the carrying capacity of an ecosystem, the
death rate rises.
birthrate must fall.
death rate must fall.
birthrate rises.
21
Antibiotic resistance in bacteria is the result of
nitrogen fixation
genetic variation.
genetic engineering.
binary fission.
22
What MOST LIKELY caused the damage to the forest ecosystem?
mercury pollution
extra nutrients in the soil
acid rain
damage to the ozone layer
23
What type of relationship MOST LIKELY exists between the birds and the elephant?
predation
parasitism
reproductive
mutalism
24
Ticks suck blood from a host organism and infect it with a disease. This is an example of
competition
commensalism
mutualism
parasitism
25
This is a type of symbiotic relationship where both organisms benefit.
competition
mutualism
parasitism
commensalism
